The Great Train Robbery

The best holidays for Philip are those spent in the courtroom. Judges shake his hand, and the secretaries feed him apple chips during the trials. That's because his uncle is the prosecutor.
This time, state prosecutor Lev Yanovich Nosov faced a truly difficult case. The main piece of physical evidence had mysteriously disappeared. This left the investigators stumped, but there is no turning back. Now the prosecutor will have a tough time, and either he will force the defendants to admit guilt during the trial, or he will let them go free.
Together with his uncle, Philip will conduct a search of the train, collect suspicious traces at the crime scene, and create a sketch of the suspect. They will also bring a confidential witness to the courtroom, and possibly solve the case!